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Home >> Jeep >> 2019 >> Renegade High Altitude, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1380 (1.3L - DTCS P025D To P0520) >> DTC Troubleshooting >> P0301-Cylinder 1 Misfire >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
ENGINE OIL LEVEL LOW/AERATED OR CONTAMINATED
INCORRECT ENGINE OIL FILTER
ENGINE VACUUM LEAK
EXCESSIVE CARBON BUILD-UP IN CYLINDER HEAD OR COMBUSTION CHAMBER
FAULTY FUEL INJECTOR
CRANKSHAFT POSITION SENSOR (CKP) OR TONE WHEEL ISSUES
FAULTY IGNITION COIL OR SPARK PLUG
COOLANT LEAKING INTO A CYLINDER
FAULTY CYLINDER HEAD GASKET
ENGINE MECHANICAL/LOW COMPRESSION
WORN CAMSHAFT LOBES, SPRINGS OR ROCKER ARMS
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .